Fatty acid ketodienes and fatty acid ketotrienes: Michael addition acceptors that accumulate in wounded and diseased Arabidopsis leaves.

Physical damage and disease are known to lead to changes in the oxylipin signature of plants. We searched for oxylipins produced in response to both wounding and pathogenesis in Arabidopsis leaves. Linoleic acid 9- and 13-ketodienes (KODEs) were found to accumulate in wounded leaves as well as in leaves infected with the pathogen Pseudomonas syringae pv. tomato (Pst). Quantification of the compounds showed that they accumulated to higher levels during the hypersensitive response to Pst avrRpm1 than during infection with a Pst strain lacking an avirulence gene. KODEs are Michael addition acceptors, containing a chemically reactive alpha,beta-unsaturated carbonyl group. When infiltrated into leaves, KODEs were found to induce expression of the GST1 gene, but vital staining indicated that these compounds also damaged plant cells. Several molecules typical of lipid oxidation, including malonaldehyde, also contain the alpha,beta-unsaturated carbonyl reactivity feature, and, when delivered in a volatile form, powerfully induced the expression of GST1. The results draw attention to the potential physiological importance of naturally occurring Michael addition acceptors in plants. In particular, these compounds could act directly, or indirectly via cell damage, as powerful gene activators and might also contribute to host cell death.

Un tango de neutres sur fond de guerre : les relations économiques entre la Suisse et l'Argentine (1938-945)

Cet article porte sur les relations économiques entre deux pays restés neutres durant la guerre. Fondé sur des documents d'archives encore inexploités, il vise à comprendre comment la Suisse et l'Argentine sont parvenues à maintenir, et même à renforcer, leurs échanges malgré les obstacles liés au conflit. La guerre offre à la Suisse l'opportunité de gagner des parts importantes du marché argentin pour les produits phares de son industrie d'exportation. Au-delà des circonstances de la guerre, ce sont aussi les stratégies volontaristes mises en oeuvre par les milieux dirigeants helvétiques qui permettent ce résultat. Parmi ces stratégies, un crédit de 40 millions de francs suisses octroyés par les milieux financiers au Gouvernement argentin est au coeur de l'analyse.

Incipit liber phisionomiae quem compilavit magister Michael Scotus ([Reprod.])

[Liber physiognomiae (latin). 1486]

Incipit liber phisionomiae quem compilavit magister Michael Scotus ([Reprod.])

[Liber physiognomiae (latin). 1477]

Liber physiognomiae ([Reprod.]) / [Michael Scotus]

[Liber physiognomiae (latin). 1486]

Methodus legendi cognoscendique historiam tam sacram quam profanam. Accessit oratio de historiae dignitate... item panegyricus scriptus in honorem festivitatis qua... Henricus Julius,... in episcopatus Mindensis possessionem indulcebatur, auctore Reinero Reineccio Steinhemio. Ad calcem addita est Commentiuncula ["sic"] de Widechindo Magno, rege Saxon., dynasta Angrivariorum, etc. Editio 2a. [Reinero Reineccio historico in inclyta Acad. Julia amico colendo. S. P. D. David Chytraeus. In methodum historicam Reineri Reineccii Carmen Simonis Mencii. Historiae et Reineri Reineccii genio, Arnoldus Freitagius. Historiae encomium per Andream Alciatum. De Westphalorum Saxonia et Widechindo Magno, etc., Petrus Lotichius secundus. De eodem Widechindo Magno Michael Bojemus.]

Comprend : Historiae encomium... ad Galeacium vice-comitem scriptum ; Clarissimo... viro Reinero Reineccio... principis Brunovicensis etc. historico, in inclyta acad. Julia, amico colendo s. p. d. David Chytraeus ; Historiae et cl. viri Reineri Reineccii genio Arnoldus Freitagius ; De Westphalorum Saxonia et Widechindo Magno etc. Petrus Lotichius Secundus ; In Methodum historicam... Reineri Reineccii Carmen ; De... Widechindo Magno Michael Bojemus

Incipit liber phisionomiae ([Reprod.]) / quem compilavit magister Michael Scotus

[Liber physiognomiae (latin). 148.]

Agrarförbundets och socialdemokraternas första samregering och den fosterländska politiken (tal hållet vid kommunalorganisationens i Viborgs landskommun möte den 20.2.1938)

Puhe

Ett sammansvetsat folk (tal, hållet i Salo den 16.10.1938)

Puhe

Capital formation in machinery and industrialization. Chile 1844-1938

The present paper revisits an old theme in Latin American and Chilean economic history; the early industrialization in the XIX - XX centuries. The difference with previous approaches is the elaboration of new quantitative series of Chilean machinery investment in the long run and its relative prices and composition, in the period when some authors have sited the beginning of the industrialization in the continent. Initial findings, based on the participation of capital formation in machinery imports and GDP, do not reinforce the idea of early industrialization in Chile.

Instructions du ministre de l'éducation nationale relatives à l'application des arrêtés du 30 août 1937 et du 11 avril 1938 fixant les programmes de l'enseignement du second degré. Fascicule 1 / Direction générale de l'instruction publique, des beaux arts et des antiquités, au Maroc

Collection : Collection d'instructions et de manuels pédagogiques